[mythtv-users] MythTV freezes on Fedora

Chris Manning kenric at lozengy.net
Sun Mar 21 21:48:52 EST 2004

Hi there.  I find your problem interesting since I am running into a
similar problem.  This is my first Mythtv install (following Jarod's
guide which is very well done.  Thanks Jarod!)  Here is my system setup:

Asus A7N8X-X Nforce based mobo
Using both onboard sound and ethernet
AMD 2400+
512Mb RAM
X being displayed on the PVR-350

Latest ver of everything available by apt as of 20 mins ago.

So here's what is happening.  When I either schedule a recording, or
tape something that is currently on, it records about 2 or 3 mins
(sometimes as much as 10-15 mins,) and then stops as if it is done
recording.  I thought at first it might have been the 350 crashing the
frontend since that seems to be happening to other people.  The frontend
is still running fine.  I decide to check Mythweb, and it complains that
it can't connect to the backend server.  I decided to restart the
backend, however, that doesn't solve the problem.  Look at the
mythbackend.log files, and no errors show up.  As it turns out, when I
restart mysql, things start working again for another 10 mins.  So upon
searching through all the system logs including the mysql log, I have
only found this error in mysqld.log:

Cannot initialize InnoDB as 'innodb_data_file_path' is not set.
If you do not want to use transactional InnoDB tables, add a line
to the [mysqld] section of init parameters in your my.cnf
or my.ini. If you want to use InnoDB tables, add to the [mysqld]
section, for example,
innodb_data_file_path = ibdata1:10M:autoextend
But to get good performance you should adjust for your hardware
the InnoDB startup options listed in section 2 at
/usr/libexec/mysqld: ready for connections

Now my sql settings are whatever were setup during the install, and it
isn't used for anything else.  While I'm unix and linux competant, I
know little about mysql.  Does anyone have any ideas what is going on? 
I'd be happy to provide any log files it that will help.

Chris Manning

On Sun, 2004-03-21 at 20:56, Hector Vayanos wrote:
> Hi,
> I am encountering a very strange problem with MythTV.
> My system characteristics are:
> - Tuner: Hauppauge PVR-250
> - MoBo: ASUS A7N266-VM
> - CPU: Athlong XP1800+
> - Ethernet: built in Nvidia (nvnet)
> - Audio: built in Nvidia (nvaudio - AC97 - intel8x0)
> I was a very happy Mythtv 0.12 user. My installation was based on Jarod's 
> guide for RH9.0 and Axel's rpm packages. I recently tried to upgrade to 
> version 0.14 but apt got completely hosed (the dependency file 
> disappeared), so I figured it was a good opportunity to transition to 
> Fedora. I again made use of Jarod's excellent guide.
> In general I am quite disappointed by Fedora. It takes extremely long both 
> to boot up and shut down compared to RH9.0 with the same services set up. I 
> did quite a bit of searching on the web but could not find any explanation 
> for this.
> MythTV 0.14 on the other hand seems to be a worthwhile upgrade. I really 
> like the status information.
> Everything seems to be working fine, except that after watching live TV for 
> about 3 to 4 minutes the image freezes and eventually the back-end service 
> sort of hangs. At first I thought there was a problem with the ivtv driver 
> or with the PVR firmware. By complete coincidence I found that if there is 
> network activity (http or telnet) at the time when mythtv freezes the 
> server recovers.
> For scheduled recordings I only get about 9-10 minutes of the show. After 
> that the backend service hangs (it keeps reporting that the tuner is 
> already in use even after the show time is passed). I am assuming that the 
> same thing that happens for live-TV also occurs here.
> I am not sure whether this is something to do with Fedora, MythTV, mplayer 
> or my ethernet adapter. I have already followed Jarod's suggestions to stop 
> DPMS. I could not find anything on the web on other power management 
> schemes (apmd is not running) that could lead to such behavior. I would be 
> very interested in hearing any suggestions on what could be causing this.
> Thanks,
> Hector
> ________________________________________________________
> Hector Vayanos
> Senior Engineer,
> Qualcomm Inc.
> phone: (858) 845-3011
> pager: (858) 636-9655
> fax: (858) 658-5006
> ______________________________________________________________________
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